Rabid Adams borked drop rate?

My friend and I have been farming him for several hours each and so far no luck with the supposed “Marek’s mouth” SMG.

Feels like his drop rate is messed up, but then again several mini bosses feel like their drop rates are not working at all.

So has anyone gotten him to drop it yet?

Not ever (… and the more chars required to post).

Also, if he drop rate is correct, can some one tell me the chances of it spawning with that awesome lunshine effect?

Haha you didn’t get the luneshine effect
Blows raspberry
did you just settle for it?

For those who didn’t have any idea what you were talking about.